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ST Semiconductor Launches Low Noise Low Voltage Regulator for Energy Saving

Sep 1 2022 2022-09 Semiconductors STMicroelectronics
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The LD56020 200mA low-voltage drop regulator of ST Semiconductor uses 1.1V to 5.5V power supply, with low output noise, and is suitable for applications with high requirements for stability and battery life.

     The LD56020 200mA low-voltage drop regulator of ST Semiconductor uses 1.1V to 5.5V power supply, with low output noise, and is suitable for applications with high requirements for stability and battery life.


     The LD56020 has a very competitive price and is very suitable for mobile devices, visual sensors and wireless connection modules. The voltage drop is very low. The maximum value is only 190mV under full load, and the maximum static current is 25 µ A under light load. The external enable pin allows the control logic to place the regulator in standby mode, reducing the quiescent current below 0.1 µ A.

 

     The power supply voltage rejection (SVRIN) of the LD56020 is 90dB (1kHz, 20mA), and the output noise is only 8.8 µ VRMS (10Hz to 100kHz), providing a pure power rail for low-voltage digital circuits. Only a small ceramic capacitor can stabilize the circuit voltage at the input and output terminals of the voltage regulator. Reducing the total number of components required by the design can minimize the bill of materials cost. Combined with the 0.65mm x 0.65mm chip level package (CSP) of the voltage regulator, the circuit area is compact and has little impact on the size of the printed circuit board.


     The regulator integrates protection functions, including short-circuit current turn back and undervoltage locking to prevent excessive dissipation power consumption in case of system failure, as well as overheating protection and internal discharge channel.

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